In the settings pop-up the simulation time frame can be specified. Start is the first analysis hour - Stop is the last. A year has 0 - 8760 hours.
The simulation steps check-boxes allow you to deactivate certain modules. “Files” writes out sensor point data and illuminance files. This is mainly for validation purposes. The “Rtrace” controls the DAYSIM simulation. “Rtrace” can be skipped when you re-run a simulation and you have not changed any geometry. “Impulse” controls the light-solver.